CN211489938U - Quick side cut device of polishing cloth wheel - Google Patents
Quick side cut device of polishing cloth wheel Download PDFInfo
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- CN211489938U CN211489938U CN201922484740.8U CN201922484740U CN211489938U CN 211489938 U CN211489938 U CN 211489938U CN 201922484740 U CN201922484740 U CN 201922484740U CN 211489938 U CN211489938 U CN 211489938U
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- polishing cloth
- cloth wheel
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Abstract
The utility model relates to a polishing cloth wheel production technical field discloses a polishing cloth wheel quick edge cutting device, including the workstation, be equipped with the cylinder installing support on the workstation, be equipped with two cylinders on the cylinder installing support, be equipped with the clamp plate on the actuating lever of cylinder, be equipped with two polishing cloth wheel mount pads on the workstation side by side, all rotate on the polishing cloth wheel mount pad and be connected with polishing cloth wheel angle adjusting assembly, polishing cloth wheel angle adjusting assembly includes polishing cloth wheel locating plate and synchronizing wheel, the middle part of polishing cloth wheel locating plate is equipped with the reference column; the utility model provides a pair of quick side cut device of polishing cloth wheel can realize the angle to two effective location of polishing cloth wheels and in the in-process of production can quick adjustment polishing cloth wheel simultaneously, labour saving and time saving, and work efficiency is high.
Description
Technical Field
The utility model relates to a polishing cloth wheel production technical field, concretely relates to quick side cut device of polishing cloth wheel.
Background
Polishing cloth wheel is the mechanical wheel that is used for the polishing, need cut edge to its edge at present to the in-process of production polishing cloth wheel, traditional side cut mode need constantly cooperate the angle of the condition adjustment polishing cloth wheel of cutting edge at the side cut in-process, thereby just can reach the complete side cut to whole polishing cloth wheel, traditional manual angle of adjustment's mode needs and cutting piece cooperation, there is certain potential safety hazard, and troublesome poeration, traditional side cut all can not realize cutting edge when two polishing cloth wheels in addition, waste time and energy, work efficiency is low.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the above-mentioned prior art, the utility model provides a quick side cut device of polishing cloth wheel can realize simultaneously two effective location of polishing cloth wheel and the angle that can quick adjustment polishing cloth wheel in the in-process of production, labour saving and time saving, work efficiency is high.
The utility model discloses the technical scheme who adopts does:
a polishing cloth wheel quick trimming device comprises a workbench, wherein a cylinder mounting bracket is arranged on the workbench, two cylinders are arranged on the cylinder mounting bracket, a pressing plate is arranged on a driving rod of each cylinder, two polishing cloth wheel mounting seats are arranged on the workbench side by side, polishing cloth wheel angle adjusting assemblies are rotationally connected on the polishing cloth wheel mounting seats respectively, each polishing cloth wheel angle adjusting assembly comprises a polishing cloth wheel positioning plate and a synchronous wheel, a positioning column is arranged in the middle of each polishing cloth wheel positioning plate, a rotating shaft is arranged between each polishing cloth wheel positioning plate and the corresponding synchronous wheel and is rotationally connected with the polishing cloth wheel mounting seats and the corresponding workbench respectively, the axes of the polishing cloth wheel positioning plates, the synchronous wheels and the rotating shafts are consistent, the polishing cloth wheel positioning plates are positioned above the polishing cloth wheel mounting seats, the synchronous wheels are positioned below the workbench, and a synchronous belt is connected between the two synchronous wheels, a driving mechanism is further arranged below the workbench and comprises a driving motor, a driving gear is arranged on an output shaft of the driving motor, a driven gear is further arranged at the lower end of any rotating shaft, and the driving gear is meshed with the driven gear;
the cutting edge mechanism is further arranged on the workbench and comprises a mounting seat, a mounting plate, a first motor, a motor seat, a second motor and a third motor, a sliding groove is formed in the mounting seat, a sliding seat is connected in the sliding groove in a sliding manner, the mounting plate is arranged on the sliding seat, a cutting blade is arranged on an output shaft of the first motor, the first motor is arranged on the motor seat, the motor seat is in sliding fit with the mounting plate, the sliding direction of the motor seat is perpendicular to that of the sliding seat, the sliding direction of the motor seat is parallel to a connecting line between the end portions of a rotating shaft, the second motor is arranged on the mounting plate, an output shaft of the second motor is connected with a first lead screw, a first lead screw seat is arranged on the mounting plate, the end portion of the first lead screw is rotatably connected with the first lead screw seat, and a threaded hole connected with the first lead screw is formed in the, the third motor is installed on the workbench, an output shaft of the third motor is connected with a second lead screw, a second lead screw seat is arranged in the sliding groove, the end part of the second lead screw is rotatably connected with the second lead screw seat, and a threaded sleeve in threaded connection with the second lead screw is arranged on the lower portion of the sliding seat.
Among this technical scheme, the reference column on two polishing cloth wheel locating plates just with the hole cooperation in polishing cloth wheel middle part, realize the preliminary location to two polishing cloth wheels, two cylinders are used for driving the clamp plate while downstream until will placing the polishing cloth wheel on polishing cloth wheel locating plate and compress tightly, have just reached the effect of fixed two polishing cloth wheels simultaneously.
Driving motor's output shaft drives drive gear and rotates, drive gear and driven gear meshing, driven gear's rotation drives a synchronizing wheel through the pivot and rotates, the synchronizing wheel passes through the synchronous rotation that two synchronizing wheels were realized to the hold-in range, when needs carry out the regulation of angular position to the polishing cloth wheel, then only can realize simultaneously the regulation to two polishing cloth wheel angular position through driving motor, so that continue the work of next a set of side cut after accomplishing a set of side cut work, make the angle of adjusting the polishing cloth wheel more convenient and fast, also can realize simultaneously with trimming mechanism's cooperation, then can realize the side cut to two polishing cloth wheels after the angular position adjustment of each time at the polishing cloth wheel is accomplished, side cut efficiency is higher.
The realization of side cut action mainly relies on third motor drive second lead screw to rotate, thereby rotate the removal that realizes the slide through the second lead screw, the slide removes the position that then can adjust the cutting piece, the range of the integral control cutting, after the position control of cutting piece is good, the start of first motor and second motor, then can drive the length direction removal along the spout when cutting piece pivoted, reach the continuous side cut effect to two polishing cloth wheels, twice side cut operation of angle modulation, to a great extent has improved work efficiency.
To sum up, this device structural design can realize simultaneously two effective positioning of polishing cloth wheel and the angle that can quick adjustment polishing cloth wheel in the in-process of production, labour saving and time saving, and work efficiency is high.
Furthermore, in order to realize the adjustment of the angle of the polishing cloth wheel by the driving motor, the driving motor is connected with a speed reducer, and an output shaft of the speed reducer is provided with a driving gear.
Furthermore, in order to better realize the sliding fit between the mounting plate and the motor base, two moving grooves are symmetrically arranged on the mounting plate, and two moving blocks which are respectively in sliding fit with the two moving grooves are arranged at the lower end of the motor base.
Furthermore, in order to realize the edge cutting of the two polishing cloth wheels arranged side by side, the length of the moving groove is greater than the length of the longest connecting line between the outermost side end points of the two polishing cloth wheel positioning plates.
Further, in order to drive the slide to move along the sliding groove, the slide is of an n-shaped structure, slide blocks which are in sliding fit with the left side and the right side of the sliding groove are arranged on the left side and the right side of the slide, and the thread sleeves are arranged at the middle positions of the lower end faces of the slide.
Furthermore, for the convenience of operation, the trimming mechanism is positioned at the rear part of the polishing cloth wheel mounting seat.
Furthermore, in order to realize effective pressing and trimming operation of the polishing cloth wheel, the pressing plate and the polishing cloth wheel positioning plate are both of a circular structure, and the radiuses of the pressing plate and the polishing cloth wheel positioning plate are consistent.
The utility model has the advantages that: among this technical scheme, the reference column on two polishing cloth wheel locating plates just with the hole cooperation in polishing cloth wheel middle part, realize the preliminary location to two polishing cloth wheels, two cylinders are used for driving the clamp plate while downstream until will placing the polishing cloth wheel on polishing cloth wheel locating plate and compress tightly, have just reached the effect of fixed two polishing cloth wheels simultaneously.
Driving motor's output shaft drives drive gear and rotates, drive gear and driven gear meshing, driven gear's rotation drives a synchronizing wheel through the pivot and rotates, the synchronizing wheel passes through the synchronous rotation that two synchronizing wheels were realized to the hold-in range, when needs carry out the regulation of angular position to the polishing cloth wheel, then only can realize simultaneously the regulation to two polishing cloth wheel angular position through driving motor, so that continue the work of next a set of side cut after accomplishing a set of side cut work, make the angle of adjusting the polishing cloth wheel more convenient and fast, also can realize simultaneously with trimming mechanism's cooperation, then can realize the side cut to two polishing cloth wheels after the angular position adjustment of each time at the polishing cloth wheel is accomplished, side cut efficiency is higher.
The realization of side cut action mainly relies on third motor drive second lead screw to rotate, thereby rotate the removal that realizes the slide through the second lead screw, the slide removes the position that then can adjust the cutting piece, the range of the integral control cutting, after the position control of cutting piece is good, the start of first motor and second motor, then can drive the length direction removal along the spout when cutting piece pivoted, reach the continuous side cut effect to two polishing cloth wheels, twice side cut operation of angle modulation, to a great extent has improved work efficiency.
To sum up, this device structural design can realize simultaneously two effective positioning of polishing cloth wheel and the angle that can quick adjustment polishing cloth wheel in the in-process of production, labour saving and time saving, and work efficiency is high.
Drawings
Fig. 1 is a schematic structural diagram of a first viewing angle of the present invention;
fig. 2 is a schematic structural diagram of a second viewing angle of the present invention;
fig. 3 is a schematic structural diagram of a third viewing angle of the present invention;
fig. 4 is a schematic structural diagram of a fourth viewing angle of the present invention;
FIG. 5 is an enlarged view at A in FIG. 4;
fig. 6 is a right side view of the present invention;
fig. 7 is a left side view of the present invention.
In the figure: a work table 1; a cylinder mounting bracket 2; a cylinder 3; a pressing plate 4; a polishing cloth wheel mounting base 5; a polishing cloth wheel positioning plate 6; a synchronizing wheel 7; a rotating shaft 8; a synchronous belt 9; a drive motor 10; a drive gear 11; a driven gear 12; a mounting base 13; a mounting plate 14; a first motor 15; a second electric machine 16; a motor base 17; a third motor 18; a chute 19; a slider 20; a cutting blade 21; a first lead screw 22; a first lead screw base 23; a second lead screw 24; a second lead screw base 25; a threaded sleeve 26; a moving groove 27; and a positioning post 28.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1-7, this embodiment provides a polishing cloth wheel fast trimming device, which comprises a workbench 1, a cylinder mounting bracket 2 is arranged on the workbench 1, two cylinders 3 are arranged on the cylinder mounting bracket 2, a pressing plate 4 is arranged on a driving rod of the cylinders 3, two polishing cloth wheel mounting seats 5 are arranged on the workbench 1 side by side, polishing cloth wheel angle adjusting components are rotatably connected to the polishing cloth wheel mounting seats 5, each polishing cloth wheel angle adjusting component comprises a polishing cloth wheel positioning plate 6 and a synchronizing wheel 7, a positioning column 28 is arranged in the middle of the polishing cloth wheel positioning plate 6, a rotating shaft 8 is arranged between the polishing cloth wheel positioning plate 6 and the synchronizing wheel 7, the rotating shaft 8 is rotatably connected with the polishing cloth wheel mounting seats 5 and the workbench 1 respectively, the axes of the polishing cloth wheel positioning plate 6, the synchronizing wheel 7 and the rotating shaft 8 are consistent, the polishing cloth wheel positioning plate 6 is located above the polishing cloth wheel mounting seats 5, the synchronous wheels 7 are positioned below the workbench 1, a synchronous belt 9 is connected between the two synchronous wheels 7, a driving mechanism is further arranged below the workbench 1 and comprises a driving motor 10, a driving gear 11 is arranged on an output shaft of the driving motor 10, a driven gear 12 is further arranged at the lower end of any rotating shaft 8, and the driving gear 11 is meshed with the driven gear 12;
the workbench 1 is also provided with an edge cutting mechanism, the edge cutting mechanism comprises a mounting base 13, a mounting plate 14, a first motor 15, a motor base 17, a second motor 16 and a third motor 18, the mounting base 13 is provided with a sliding groove 19, the sliding groove 19 is connected with a sliding base 20 in a sliding manner, the mounting plate 14 is arranged on the sliding base 20, an output shaft of the first motor 15 is provided with a cutting blade 21, the first motor 15 is arranged on the motor base 17, the motor base 17 is in sliding fit with the mounting plate 14, the sliding direction of the motor base 17 is perpendicular to the sliding direction of the sliding base 20, the sliding direction of the motor base 17 is parallel to a connecting line between the end parts of the rotating shafts 8, the second motor 16 is arranged on the mounting plate 14, an output shaft of the second motor 16 is connected with a first lead screw 22, the mounting plate 14 is provided with a first lead screw base 23, the end part of the first lead screw 22 is rotatably connected with the first, the third motor 18 is installed on the workbench 1, an output shaft of the third motor 18 is connected with a second lead screw 24, a second lead screw seat 25 is arranged in the chute 19, the end part of the second lead screw 24 is rotatably connected with the second lead screw seat 25, and the lower part of the sliding seat 20 is provided with a threaded sleeve 26 in threaded connection with the second lead screw 24.
Among this technical scheme, the reference column on two polishing cloth wheel locating plates 6 just with the hole cooperation in polishing cloth wheel middle part, realize two preliminary locations that polish the cloth wheel, two cylinders 3 are used for driving pressure plate 4 and move down simultaneously until will placing the polishing cloth wheel on polishing cloth wheel locating plate 6 and compress tightly, have just reached the effect of fixed two polishing cloth wheels simultaneously.
The output shaft of driving motor 10 drives drive gear 11 and rotates, drive gear 11 and driven gear 12 mesh, driven gear 12's rotation drives a synchronizing wheel 7 through pivot 8 and rotates, synchronizing wheel 7 passes through hold-in range 9 and realizes the synchronous rotation of two synchronizing wheels 7, when needs carry out the regulation of angular position to the polishing cloth wheel, then only can realize simultaneously the regulation to two polishing cloth wheel angular position through driving motor 10, so as to accomplish the work of continuing next a set of side cut after a set of side cut work, make the angle of adjusting the polishing cloth wheel more convenient and fast, also can realize the cooperation with trimming mechanism simultaneously, then can realize the side cut to two polishing cloth wheels after the angular position of each time regulation of polishing cloth wheel is accomplished, the side cut efficiency is higher.
The realization of side cut action mainly relies on third motor 18 drive second lead screw 24 to rotate, thereby rotate through second lead screw 24 and realize the removal to slide 20, slide 20 removes the position that then can adjust cutting piece 21, the amplitude of the integral control cutting, after the position control of cutting piece 21 is good, the start of first motor 15 and second motor 16, then can drive cutting piece 21 pivoted while along the length direction removal of spout 19, reach the continuous side cut effect to two polishing cloth wheels, twice side cut operation of once angle modulation, to a great extent has improved work efficiency.
To sum up, this device structural design can realize simultaneously two effective positioning of polishing cloth wheel and the angle that can quick adjustment polishing cloth wheel in the in-process of production, labour saving and time saving, and work efficiency is high.
Example 2:
this embodiment is defined by optimization based on embodiment 1 described above.
In order to adjust the angle of the polishing cloth wheel by the driving motor 10, the driving motor 10 is connected with a speed reducer, and an output shaft of the speed reducer is provided with a driving gear 11.
Example 3:
this embodiment is defined by optimization based on embodiment 1 described above.
In order to better realize the sliding fit between the mounting plate 14 and the motor base 17, two moving grooves 27 are symmetrically arranged on the mounting plate 14, and two moving blocks which are respectively in sliding fit with the two moving grooves 27 are arranged at the lower end of the motor base 17. In order to realize the trimming of two polishing cloth wheels arranged side by side, the length of the moving groove 27 is greater than the length of the longest connecting line between the outermost end points of the two polishing cloth wheel positioning plates 6.
Example 4:
this embodiment is defined by optimization based on embodiment 1 described above.
In order to drive the slide 20 to move along the slide groove 19, the slide 20 is of an n-shaped structure, slide blocks which are matched with the slide groove 19 in a sliding mode are arranged on the left side and the right side of the slide 20, and a threaded sleeve 26 is arranged in the middle of the lower end face of the slide 20.
Example 5:
this embodiment is defined by optimization based on embodiment 4 above.
For convenient operation, the trimming mechanism is positioned behind the polishing cloth wheel mounting seat 5.
Example 6:
this embodiment is defined by optimization based on embodiment 1 described above.
In order to realize the effective pressing and trimming operation of the polishing cloth wheel, the pressing plate 4 and the polishing cloth wheel positioning plate 6 are both of a circular structure and have consistent radiuses.
Example 7:
this embodiment is defined by optimization based on embodiment 2 described above.
In order to better realize the sliding fit between the mounting plate 14 and the motor base 17, two moving grooves 27 are symmetrically arranged on the mounting plate 14, and two moving blocks which are respectively in sliding fit with the two moving grooves 27 are arranged at the lower end of the motor base 17.
In order to drive the slide 20 to move along the slide groove 19, the slide 20 is of an n-shaped structure, slide blocks which are matched with the slide groove 19 in a sliding mode are arranged on the left side and the right side of the slide 20, and a threaded sleeve 26 is arranged in the middle of the lower end face of the slide 20.
For convenient operation, the trimming mechanism is positioned behind the polishing cloth wheel mounting seat 5.
In order to realize the effective pressing and trimming operation of the polishing cloth wheel, the pressing plate 4 and the polishing cloth wheel positioning plate 6 are both of a circular structure and have consistent radiuses.
According to the working principle of the device, two polishing cloth wheels are respectively placed on polishing cloth positioning plates 6, corresponding pressure plates 4 are driven to move downwards through two cylinders 3, the polishing cloth wheels are pressed tightly by the pressure plates 4, then a third motor 18 is started, a second lead screw 24 drives a sliding seat 20 to move, the slicing amplitude of a cutting blade 21 is adjusted, then a first motor 15 and a second motor 16 are started, the first motor 15 drives the cutting blade 21 to rotate, the second motor 16 drives a motor base 17 to move through a first lead screw 22, the first motor 15 is moved, the moving distance of the first motor 15 is larger than the length of the longest connecting line between the outermost side ends of the two polishing cloth wheel positioning plates 6, and therefore the cutting blade 21 is guaranteed to continuously cut the edges of the two polishing cloth wheels;
after a group of trimming is finished, the air cylinder 3 drives the pressing plate 4 to move upwards, the driving motor 10 is started to drive the two polishing positioning plates 6 to rotate for a certain angle, so that the angular positions of the two polishing cloth wheels can be adjusted simultaneously, and then the pressing and cutting actions are repeated until the complete trimming of the two polishing cloth wheels is finished.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (7)
1. The utility model provides a quick side cut device of polishing cloth wheel which characterized in that: the polishing cloth wheel angle adjusting device comprises a workbench, wherein a cylinder mounting bracket is arranged on the workbench, two cylinders are arranged on the cylinder mounting bracket, a pressing plate is arranged on a driving rod of each cylinder, two polishing cloth wheel mounting seats are arranged on the workbench side by side, polishing cloth wheel angle adjusting components are rotationally connected to the polishing cloth wheel mounting seats respectively, each polishing cloth wheel angle adjusting component comprises a polishing cloth wheel positioning plate and a synchronous wheel, a positioning column is arranged in the middle of each polishing cloth wheel positioning plate, a rotating shaft is arranged between each polishing cloth wheel positioning plate and the corresponding synchronous wheel and is rotationally connected with the polishing cloth wheel mounting seats and the workbench respectively, the axes of the polishing cloth wheel positioning plates, the synchronous wheels and the rotating shafts are consistent, the polishing cloth wheel positioning plates are positioned above the polishing cloth wheel mounting seats, the synchronous wheels are positioned below the workbench, a synchronous belt is connected between the two synchronous wheels, and a driving mechanism is also arranged below the workbench, the driving mechanism comprises a driving motor, a driving gear is arranged on an output shaft of the driving motor, a driven gear is further arranged at the lower end of any rotating shaft, and the driving gear is meshed with the driven gear;
the cutting edge mechanism is further arranged on the workbench and comprises a mounting seat, a mounting plate, a first motor, a motor seat, a second motor and a third motor, a sliding groove is formed in the mounting seat, a sliding seat is connected in the sliding groove in a sliding manner, the mounting plate is arranged on the sliding seat, a cutting blade is arranged on an output shaft of the first motor, the first motor is arranged on the motor seat, the motor seat is in sliding fit with the mounting plate, the sliding direction of the motor seat is perpendicular to that of the sliding seat, the sliding direction of the motor seat is parallel to a connecting line between the end portions of a rotating shaft, the second motor is arranged on the mounting plate, an output shaft of the second motor is connected with a first lead screw, a first lead screw seat is arranged on the mounting plate, the end portion of the first lead screw is rotatably connected with the first lead screw seat, and a threaded hole connected with the first lead screw is formed in the, the third motor is installed on the workbench, an output shaft of the third motor is connected with a second lead screw, a second lead screw seat is arranged in the sliding groove, the end part of the second lead screw is rotatably connected with the second lead screw seat, and a threaded sleeve in threaded connection with the second lead screw is arranged on the lower portion of the sliding seat.
2. The quick trimming device for buffing wheel according to claim 1, wherein: the driving motor is connected with a speed reducer, and an output shaft of the speed reducer is provided with a driving gear.
3. The quick trimming device for buffing wheel according to claim 1, wherein: two moving grooves are symmetrically arranged on the mounting plate, and two moving blocks which are respectively in sliding fit with the two moving grooves are arranged at the lower end of the motor base.
4. The quick trimming device for buffing wheel according to claim 3, wherein: the length of the moving groove is greater than the length of the longest connecting line between the outermost side end points of the two polishing cloth wheel positioning plates.
5. The quick trimming device for buffing wheel according to claim 1, wherein: the slide is n style of calligraphy structure, the side is equipped with the slider with the slide fit of the side of the left and right sides of spout about the slide, the intermediate position of terminal surface under the slide is set up to the thread bush.
6. The quick trimming device for buffing wheel according to claim 1, wherein: the trimming mechanism is positioned behind the polishing cloth wheel mounting seat.
7. The quick trimming device for buffing wheel according to claim 1, wherein: the pressing plate and the polishing cloth wheel positioning plate are both of circular structures, and the radiuses of the pressing plate and the polishing cloth wheel positioning plate are consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922484740.8U CN211489938U (en) | 2019-12-30 | 2019-12-30 | Quick side cut device of polishing cloth wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922484740.8U CN211489938U (en) | 2019-12-30 | 2019-12-30 | Quick side cut device of polishing cloth wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211489938U true CN211489938U (en) | 2020-09-15 |
Family
ID=72397810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922484740.8U Active CN211489938U (en) | 2019-12-30 | 2019-12-30 | Quick side cut device of polishing cloth wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211489938U (en) |
-
2019
- 2019-12-30 CN CN201922484740.8U patent/CN211489938U/en active Active
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